Separable fastener installation



y 9, 1929 A. G. ANDERSON 1.720.408

SEPARABLE FASTENER INSTALLATION Filed July 22, 1927 Inventor.- flndmw a. antler-s02;

Patented July 9, 1929.

ill'lED fiTATE 3 l ANDREW Gr. ANDERSON, 0F WOLLASTON, MASElACI-TUEETTS, ASEIGTIOR, BY ASSIGNMENTS, T0 CARR FAElTENER COMPANY, A UtlRPOTtAJlItJllT 0F MASSHrCH'U- SETTS.

Application filed July 22,

My invention aims to provide improvements in separable fastener installations Tn the drawings, which illustrate preferred embodiment of the invention:-

Figure l is a plan view showing a stud and socketinstallation;

Fig. 2 is a section taken on the line 55-43 of Fig.1. 1;

Fig. includes a side and a plan viev-:, re spectively, of the attaching element, or nail, of the installation; and

l is a bottom View of the stud men'iber of the installation.

Referring to the drawii'lgs, l have shown. astud and socket particularly, though not exclusively, useful in connection with wearing apparel.

The stud portion of the stud installation and the socket installation are substantially the same as shown and described in my copending application Serial No. 157,967, tiled Dec. 30, 1926, and are shown merely for the purpose of illustration. ther types of this toner elements may be attached, in the manner hereinafter described, with equally satisfactory results.

The stud member has a base 1, a neck 2 and a head 3, the head and nccl: being divided by a slit 4: to permitcontraction and expansion of the head for engagement with the socket 5, as shown in Fig. 2. The head is oil'- set relative to the neck toprovide for threcside locking engagement with the socket. as more fully described in the above-mentioned co-pending application.

An attaching part 6 is secured to the base of the stud member by turning the edge 7 of the base 3 over the edge of the part ti, as shown in Figs. 2 and t. This attaching part (i is provided with a number of yieldable lingers 8 pressed toward the head 3 of the stud. The ends of the fingers terminate about an aperture 9 (Fig. 4), which is normally located above the plane of the attaching part 6, as shown in Fig. 2.

The stud unit is secured to the carrying medium 10 by means of an attaching element having a head seated against one side of the carrying medium and a shank ozctenc ling through the carrying medium and eng. I m the attaching part (3, as illustrated by Fig.

Tn this application the attaching element (Figs. 2 and 3) includes a nail part having a head 11 and a shank portion 12. The shank portion is provided with annular grooves 13.

1927. Serial No. 207,624

A cup part 14 is secured to the head 11 of the nail part. The head 11 of the ordinary nail is too small to permit a cap to be fitted thereto in the usual manner of turning a portion of the cap undei the head of the nail, as the cap would not be large enough to overlie an area of the carryingmedium sutlicient to provide a durable grip thereon between the cap and the base of the stud member. Therefore, when a larger cap than the head of the nail is desired, I provide a number of petal-like portions 15 (F extending inwardly from the edge of the continuous flange portion 16 at the under side of the nail head 11. These petal-like portions extend to the shank 12 of the nail and serve the double purpose of curing the cap part 14; to the nail head 11 and preventing substantial lateral movement of one relative to the other.

lVhen the stud member is secured to the carrying medium 10,.the shank 12 of the nail is forced between the fingers 8, the free ends of which snap into the annular grooves 13, as shown in Fig. 2. Because of the fact that the lingers 8 are bent upwardly toward the head. 3 of the stud, the nail cannot be withdrawn. Any stress tending to separate the parts of the stud assembly tends to reduce the size of the aperture 9 and the lingers 8 grip the shank more tightly. By this method of attaclugnent the carrying n'iedium is gripped t' itly between the parts of the stud installation by the use of the least number of parts.

The spurs 1? formed at the unde side of the stud member (Figs. 2 and l) press tightly into the carrying medium and prevent turning of the stud part. Thus the stud may be located in a m'edetermined relation to the carrying medium, as necessary with this type of stud, and it will be held in the position desired.

l: do not wish to be limited to the particular structure illustrated and described, my invention being best defined in the following claims.

Claims:

l. A fastener stud installation comprising a stud member having a base, a neclr and a. head, the head being olfsetrelative to the neck to provide for three-side locking engagement wi th a socket, an attaching part secured to the base of the stud. member, a stud-carrying medium, said attaching part having plural yieldablc fingers arranged about an aperture through said attaching; part, an attaching element having a head seated against the studcarrying medium and a shank extending gagement With a socket, an attaching part secured'to the base of the stud member, a studcarrying medium, said attaching part having plural yieldable fingers arranged about an aperture through said attaching part, and an attaching element having a flanged portion seated against the stud-carrying medium and a shank extending through the carrying medium and making positive locking engagement with the said fingers to prevent separation of the stud from the carrying medium,

the said carrying medium being held tightly between the head of the attaching element and the base of the stud member and spurs provided by the stud member, said spurs being embedded in the carrying inediumto prevent turning of the stud so that it may be held in a predetermined relation to the carrying medium.

3.'A fastener stud installation comprising a stud member having a base, a neck and a head, the head being offset relative to the neck to provide for three-side locking engagement With asocket, an attaching part secured to the base of the stud member, a stud-carrying medium, an attaching part having plural yieldable fingers arranged about an aperture through said attaching part, an attaching element having a head and a shank portion, a cap part secured to said head, said cap being substantially larger in diameter than the head of the attaching element and being socuredthereto by a plurality of laterally abutting petal-like portions extending to the shank of the attaching element beneath the head thereof to prevent lateral movement of the cap'relatiw to the head of the attaching element and said shank extending through the carrying medium and making positive locking engagement with the said fingers to prevent separation of the stud from the carrying medium and means forming part of the assembly for preventing turning of the stud relative to the stud-carrying medium.

4t. A fastener stud installation comprising a stud member having a base, a neck and a head, the head being olfset relative to the neck to provide for three-side locking engagement with a socket, an attaching part secured to the base of the stud member, a stud-carrying medium, an attaching part having plural yieldable lingers ar ranged about an aperture through said attaching part, an attaching element having a head and a shank portion, a cap part secured to said,

head, said cap being substantially larger in diameter than the head of the attaching element and being secured thereto by inwardly extending petal-like portions pressed against the under side of the head to secure the cap part thereto and said shank extending through the carrying medium and making positive locking engagement with the said fingers to prevent separation of the stud from the carrying medium and means forming part of the assembly for preventing turning of the stud-carrying medium.

In testimony whereof, I have signed my name to this specification.

ANDRE'W G. ANDERSON. 

